baber/WOPTO huggingface dataset:
Patent GB-1182789-A (GB)
Title: Device for Performing Integrating Measurements During Transient Processes.
Inventor: MAREK ALOIS
IPC: G01R31/26
Filed: 1967-05-03
Abstract: 1,182,789. Measuring diode recovery; measuring luminescence; measuring magnetic flux. VYZKUMNY USTAV MATEMATICKYCH STROJU. May 3, 1967 [May 3, 1966], No. 20446/67. Headings G1A, G1N and G1U. A system for measuring the time integral of a transiently varying quantity representing the behaviour of a test device during a transient switching process, e.g. measuring the reverse recovery charge of a diode 1 when a reverse voltage is suddenly applied, incorporates conditioning circuits 2 for applying the appropriate switching waveforms to the device 1 under test, a sensing device such as a resistor 31 for producing a voltage output related to the quantity to be integrated and a high speed gating circuit 3. The transitions between the conditions applied to the device, e. g. between a forward current I+ and a reverse voltage U-, are initiated from a repetition generator 7 operating at relatively high frequency 10<SP>5</SP>c/s. This generator also controls the opening of the gate 3 through an interval control 71 to open on the occurrence of the transition but to close before the generator 7 returns the conditioning circuits to their previous condition, to define an integrating interval. The conditioning circuits 2 are switched by a timing generator 8 between main and reference switching cycles at much lower frequency, say 500 c/s, the reference switching being e.g. between O and U-. The output from the gate is passed to integrating and amplifying circuits 9 and 4 and thence to a synchronous detector 5 controlled by the timing generator. This operates to subtract the integrated value determined for the reference switching sequence from that for the main sequence, and this result is passed to the display or indicator 6. A more detailed block diagram (Fig. 2) is accompanied by circuit diagrams for the individual blocks (Figs. 3-13) which are largely unexplained in the description. The system is said to be applicable to determining the quantity of light emitted by a luminescent crystal, the conditioning circuit 2 then being a switchable ultraviolet source and the detector 31 being a photo-multiplier. A further application of the system is to measuring the magnetic flux through a ferromagnetic material upon exceeding the Curie temperature. In this case the conditioning circuit will be a heat source which can be cycled above and below the Curie temperature and the detector is an inductive winding. In measuring reverse recovery of a diode, the repetition generator operates for example in a main sequence according to the timing sequence in Fig. 1(c), defining both preparatory intervals where current Id flows, and working intervals, where reverse voltage U- is applied. The Figure shows a plot of current and the reverse transient to be integrated is shown shaded. The working interval is divided into the integrating interval, fixed by unit 71, and a safety interval. In a reference sequence there may be no switching, to ascertain if there is any steady reverse current.
Patent GB-453188-A (GB)
Title: Improvements in or relating to the production of titanium pigments
IPC: C01G23/053
Filed: 1935-07-18
Abstract: A nucleous liquor for assisting the hydrolysis of titanium salt solutions is obtained by preparing a titanium-sulphuric acid solution substantially free from iron, neutralizing it with an alkaline reagent to cause precipitation, agitating in order to redissolve the precipitate and then heating to develop its nuclear properties.  The iron free solution may be obtained, for instance, by dissolving a titanium ore or compound in sulphuric acid and then removing the iron, or by dissolving iron-free ortho- or metatitanic acid or purified titanyl sulphate in sulphuric acid, or by dissolving the reaction product of rutile sintered or fused with an alkali in sulphuric acid and removing iron if necessary. The alkaline reagent which may be ammonia or sodium hydroxide is preferably added in such an amount that the pH value of the solution does not exceed 2,5 and redissolution of the precipitate may be assisted by adding a neutral ionizable salt such as ammonium chloride, sodium chloride, potassium nitrate, ammonium phosphate, or sodium sulphate.  The heating of the solution to develop nuclei may be carried out at temperatures below 85 DEG  C.  From 0,5 to 10 per cent of the nuclear liquor may p  be added to a titanium salt solution, which is then hydrolyzed by boiling, and the precipitate washed and calcined to form a pigment. Specifications 310,949, [Class 1 (iii)], and 388,978 are referred to. The Specification as open to inspection under Sect. 91 includes an example relating to the preparation of a nucleus liquor from rutile. This example does not appear in the Specification as accepted.
Patent GB-249008-A (GB)
Title: Head rest for operating chairs
IPC: A61G15/12
Filed: 1925-08-17
Abstract: 249,008. Wiegand, A. Aug. 17, 1925. Rest, head.-A head rest, particularly for use on operating chairs, comprises a rubber pad or cover b having a beading d which engages the rim e of a cup-shaped mounting a, and is secured in position in or on the mounting by the pressure of a pneumatic cushion c contained within the cup.
Patent GB-364616-A (GB)
Title: Improvements in or relating to circular rib knitting machines
IPC: D04B9/06
Filed: 1930-06-08
Abstract: 364,616. Circular knitting-machines. JACQUARD KNITTING MACHINE CO., Inc., 1924, Hunting Park Avenue, Philadelphia, U.S.A.--(Assignees of Sirmay, J. ; 4939, B. Street, Philadelphia, U.S.A.) July 8, 1930, No. 20661. Convention date, May 29. [Class 74 (i).] Relates to an improved combined dogless drive and racking mechanism for the dial of a rib machine. To hold the dial stationary with respect to the cylinder 1 the retaining spindle 7 is extended above the supporting nut 15 to a dogless mechanism carried by an annular bracket 18. To hold the spindle 7 against rotation the upper end is fastened to a ring 20 which is locked by latches 23 to a ring 21 surrounding it. Adjusting screws working against a pin 28 on a bracket 29 provide for circumferential adjustment of the dial. The ring 21 is racked by worm gear 51, a Geneva wheel 52 ensuring that the distance racked bears a simple relation to the pitch of the needles. The wheel 52 is controlled by pattern mechanism, which determines whether it remains at rest or is driven by one or other of pin discs 55, 56 rotating in opposite directions. The latches 23 are operated to slide radially in the ring 20 by a toothed wheel 32 having a cam track 37 and also guide eyes 43 for the yarns. The dial needle projecting cams and the cylinder needle raising cams are placed out of action while racking is being done. The yarns are also put out of action, by rocking the yarn guides, and. are cut and trapped. The racking mechanism may be applied to the cylinder as well as to the dial.
Patent GB-1041056-A (GB)
Title: Process for the nitrosation of hydrocarbons
Inventor: BAUMGARTNER PIERRE
Filed: 1963-05-23
Abstract: Alkanes and cycloakanes containing at least 5 carbon atoms are nitrosated to the corresponding oxime or oxime salt by passing a mixture containing nitrosyl halide in the hydrocarbon to be nitrosated at a maximum concentration of 5% by weight in front of a source of actinic light, i.e. light of a wavelenght of less than approx. 7,500 <\>rA, at a mean linear speed of at least 1 cm./sec. In a preferred embodiment the resulting mixture is contacted with an aqueous solution of a strong inorganic acid, i.e. an inorganic acid which substantially dissociates into ions in aqueous solution, within or outside the irradiation space and the two phases so formed are separated, the aqueous phase, containing the oxime or its salt, being neutralized to separate the oxime or heated to effect the Beckmann transposition and the anide so formed collected and the hydrocarbon phase being recyled to the irradiation space.  The nitrosation reaction may be effected in the presence of a gaseous halogen hydracid and/or an inert solvent, e.g. benzene and carbon tetrachloride.
Patent GB-771857-A (GB)
Title: Composition
IPC: C08K5/37
Filed: 1955-07-18
Abstract: Chlorine-containing synthetic resins, e.g. polyvinyl chloride, are stabilized by incorporating therein a mercaptoacid ester of the formula HSRCOOR1, where both R and R1 represent a substituted or unsubstituted alkyl, aryl or mixed alkyl-aryl radical and optionally a plasticiser and another stabilizer. Esters mentioned are nonyl, glyceryl, butyl monoricinoleate mono-, dihydroabietyl, octadecyl, iso-octyl, decyl, trimethyl hexyl, cyclohexyl, phenoxyethyl, trimethyl nonyl, diethylene glycol laurate, and ethylene glycol ricinoleate mercaptoacetates, dibutyl and dinonyl thiomalates, 2-butyloctyl beta - mercaptopropionate, methyl thiosalicylate, trimethyl alpha-mercaptopropionate, trimethylhexyl beta-mercaptobutyrate, trimethylhexyl alpha - mercaptovalerate, trimethylhexyl alpha - mercaptocaproate, butyl alpha - mercaptocaprylate, ethyl alpha - mercapto - alpha - ethylcaproate, butyl alpha - mercaptopelargonate, butyl alpha - mercaptolaurate, butyl alpha - mercaptopalmitate, butyl alpha-mercaptostearate, ethyl alpha-mercaptophenylacetate, ethyl alpha - mercaptodiphenylacetate, trimethylhexyl alpha - mercaptodiethylacetate, trimethylhexyl 5 - mercapto - valerate, trimethyl - hexyl 6 - mercaptocaproate, trimethylhexyl 7 - mercaptohexanoate, butyl 8 - mercaptocaprylate, and butyl 12-mercaptolaurate.  The additional stabilizer may be dimethyl tin oxide, dibutyl tin oxide, dilauryl tin oxide, butyl stannoic acid, the reaction product of organotin oxides with aldehydes or acids, e.g. dibutyl tin oxide and 2-ethyl hexanal, antimony trioxide, trialkyl or triaryl antimonites or antimonyl compounds.  Dioctyl phthalate is the exemplified plasticiser.
Patent GB-822355-A (GB)
Title: Improvements in or relating to textile fibre drafting mechanisms
Inventor: NOGUERA JOSEPH
IPC: D01H1/22
Filed: 1956-07-05
Abstract: 822,355. Fibre drafting mechanisms. CASABLANCAS HIGH DRAFT CO. Ltd. Feb. 18, 1957 [July 5, 1956], No. 20876/56. Class 120(2) Rotation of drafting rollers upon removal of a change pinion is prevented by control means including a rotatable control pinion and a pawl and ratchet device operable through the pinion to prevent reverse rotation of the rollers due to torsional stress. The control means is mounted for displacement to non-operative condition. An arm 4 pivoted at 5 has a slot 7 engageable over a bolt 8 by which the arm may be clamped. Carried by the arm 4 is a short shaft 11 on which are mounted a control pinion 12 and ratchet wheel 14 against which engages a pawl 16 pivoted on the arm 4. When the change pinion 2 is to be removed, the control pinion 12 is brought into engagement with the gear 1 and the bolt 8 tightened. If it is desired to advance the gear wheel 1, the shaft 11 may be rotated by applying a spanner to a nut 13 held against rotation on the shaft. A modified arm 4 may have a fork for engagement with the pivot 5, so that the control means may be moved to different machines.
Patent GB-679551-A (GB)
Title: Improvements relating to electrolytic solutions for the electro-deposition of metals
IPC: C25D3/28
Filed: 1949-08-11
Abstract: 679,551. Electro-deposition of nickel or nickel and cobalt alloy. CANNING & CO., Ltd., W. (Weisberg, L.). Aug. 11, 1949, No. 20895/49. [A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 28, 1950.] Class 41. An aqueous solution for use in electrodeposition of nickel contains per litre 120- 400 grms. nickel sulphate, 15 to 60 grms. nickel chloride, 5 to 30 grms. formic acid, 30 to 40 grms. boric acid and approximately 1 grm. coumarin, the pH value of the solution being between 2.1 and 2.5. The solution may also contain up to 0.5 grms. per litre of formaldehyde, and for the electro-deposition of a combination of nickel and cobalt may contain 0.1 to 3 grms. per litre of cobalt sulphate. There may also be up to 150 grms. per litre of magnesium sulphate. Specification 622,761 is referred to.
Patent GB-142723-A (GB)
Title: Improvements in or relating to swinging hammock couches and such like articles
IPC: A47C3/02
Filed: 1919-08-26
Abstract: 142,723. Maggs, A. E. Aug. 26, 1919. Hammocks; swing seats; awnings for exposed seats.-A hammock, swing couch, or the like is slung from a cross-bar 3 supported by two sets of legs 1, 2 hinged together in such a manner that, when the legs are opened out, the upper ends grip the cross-bar. Fig. 3 shows one form of gripping hinge having sockets 6 to receive the legs 1, 2 and gripping-arms 11, 12 to engage the cross-bar 3. An adjustable, awning may be carried on arms 22 pivoted on bolts 21 carried by plates 18 secured to the ends of the cross-bar 3.
Patent GB-483623-A (GB)
Title: Improvements in or relating to shaft couplings and coupling discs
IPC: F16D3/04
Filed: 1937-07-29
Abstract: 483,623. Universal joints. BOSCH AKT.-GES., R. July 29, 1937, No. 20964. Convention date, May 24. [Class 80 (ii)] A shaft coupling, particularly for the drive of injection pumps of internal-combustion engines, comprises pairs of dogs g, h projecting axially from opposed shaft-flanges a, b into closed slots k in a coupling disc i, which has no other openings or recesses. The slots k have a radial length greater than that of the dogs, but have substantially the same width as them. The coupling-disc i may be of fibre or moulded phenol resin containing paper or waste fabric insertions, in which latter case the holes k are produced by plugs during the moulding.
Patent GB-736956-A (GB)
Title: Improvements in the preparation of particulate highly polymeric materials in a form suitable for transport
Inventor: BILLING JOSEPH
IPC: C08B11/20
Filed: 1951-09-05
Abstract: Bulky particulate highly polymeric organic materials are compressed at temperatures below their thermal softening temperatures into blocks having a density not exceeding 85 and preferably 75 per cent of the true density of the material, and skins are formed on the blocks by applying a small quantity of a solvent for the material to the surfaces of the blocks and then removing it.  The density of the material prior to its compression is not more than half its true density.  The material may be a cellulose ether or ester, such copolymers comprising vinyl chloride, vinylidene chloride, vinyl acetate or acrylonitrile as are soluble in acetone, and such high linear condensation polymers of the polyamide, polyurethane and polyester types as are soluble in alcohol.  Before the particulate material is compressed it is preferably ground.  The compression is preferably effected at atmospheric temperature, but a higher temperature may be used, provided that it is not so high that the individual particles of the material begin to stick together.  The blocks formed by compression should preferably have rounded edges. The solvent applied to the surface of the block may be allowed to penetrate the block about 0.005 to 0.1 inch and may then be removed by evaporation.  In the example, an acetone-soluble cellulose acetate of bulk density about 25 lb./cu. ft. is ground and compressed at room temperature in a cylindrical mould having rounded edges under a pressure of about 1.4 tons/sq. inch to an apparent density of about 50 lb./cu. ft.  Acetone is then sprayed on to the surface of the block and rapidly removed by evaporation in a current of warm air. The process converts particulate materials into a form which is more suitable for transport, is easily broken down again for use, and is not unduly friable when handled.
Patent GB-1279175-A (GB)
Title: A process for mounting diamonds or other precious stones on the body of a piece of jewellery
IPC: A44C17/04
Filed: 1970-05-01
Abstract: 1279175 Setting gems DIAMANTS ET JOAILLERIES HENRI FAVRE 1 May 1970 [2 May 1969] 21001/70 Heading A3H [Also in Division B3] In a process for setting gem stones, the gems 1 are initially mounted on an intermediate support 2 by claws 3. The barrel 4 of the intermediate support 2 has a blob of solder 5 attached to it by means of an electric arc in an inert atmosphere, e.g. of hydrogen and water vapour. The solder comprises an alloy of gold and palladium or nickel melting at a temperature about 50‹C lower than the setting. The barrel 4 is then inserted into a hole (7) Fig. 2 (not shown) in the jewel and the solder is melted by heating in a furnace.
Patent GB-1528645-A (GB)
Title: Printing machines
IPC: B41F21/05
Filed: 1976-05-21
Abstract: 1528645 Sheet handling ADAMOVSKE STROJIRNY NARODNI PODNIK 21 May 1976 [29 May 1975] 21096/76 Heading B6C [Also in Division B8] In a sheet printing machine, rocking grippers 33 are controlled by cam follower rollers 25, 32 engaging cams 6, 9 mounted on the shaft 1 of an impression cylinder 40 so that the grippers 33 move from rest to a velocity at line 39 equal to that of grippers 37 on the cylinder 40 and thence to a rest position again thus smoothly passing a sheet to grippers 37. An adjustable spring 26 joins levers 15 and 16 which respectively support the rollers 25 and 32.
Patent GB-1017437-A (GB)
Title: Improvements in or relating to processes for the recovery of radioactive phosphorus
IPC: C01B25/00
Filed: 1964-05-21
Abstract: 1,017,437. Purifying radio-isotopes. ABBOTT LABORATORIES. May 21, 1964 [May 24, 1963], No. 21106/64. Heading G6R. Radio-active phosphorus-32 is recovered from neutron-irradiated sulphur by heating with a water-miscible amide of the general formula where R and R<SP>1</SP> are alkyl groups of 1-3 carbon atoms and n is 0-2, to dissolve the phosphorus and at least part of the sulphur, cooling to precipitate sulphur, removing the sulphur, adsorbing the phosphorus from solution on to an anion exchange resin, and eluting with a non-oxidizing acid. Preferred amides are dimethylformamide and dimethylacetamide, although other amides are listed, and diethylacetamide is used in Example 2. The sulphur may be dissolved at 80-120‹ C. and the solution then cooled to below 80‹ C.; before or after removal of precipitated sulphur, water may be added to precipitate further material. The anion exchange resin is used in the free base form and is preferably of the polyamide type, although strongly basic resins of the trimethylate or dimethylethanolated quaternary ammonium types may also be used. The adsorbed radio-active phosphorus in the form of orthophosphate is preferably eluted with hydrochloric acid, but acetic, sulphuric, hydrobromic, and citric acids are also suitable.
Patent GB-142725-A (GB)
Title: Improved device for indicating the passage of a fluid through a pipe or conduit
IPC: G01P13/00
Filed: 1919-08-28
Abstract: 142,725. Le Bozec, L. Aug. 28, 1919. Measuring-apparatus. - Means for indicating the flow or passage of a fluid through a conduit, e.g. the feed-pipe of an internal-combustion engine, comprises an external metal casing a with apertures b therein, an inner tube c of transparent material held in position by rings d, g of resilient material and screws e, f, and a shutter h inside the tube c, which when the fluid is passing rises so as to expose the apertures band allow the interior to be observed. The shutter h, which is of light metal but of greater density than the fluid, is provided at the lower end, or at the top and bottom, with one or more apertures, the total area of which is equal to the cross-sectional area of the conduit. To render the device visible at night, a source of light may be provided behind the apparatus. The apertures b may be graduated so that the height to which the shutter rises will give an indication proportional to the speed of the fluid. A spring may be arranged above the shutter to keep it on its seating i when no fluid is passing.
Patent GB-259526-A (GB)
Title: A new or improved cuff fastener
IPC: A44B5/02
Filed: 1926-08-28
Abstract: 259,526. Collins, C. E. Aug. 28, 1926. Sleeve - links; studs. - A sleeve - link comprises two members 1, 2, each having flanges at both ends, one member 2 having a projecting stem 12 adapted to be expanded, by a pin 17 slidable in the stem, inside a tubular projection on the other member 1 to lock the members together. The interior of the tubular projection may be tapered so that locking can be effected at any position along the length. The stem 12 is made in one piece, Fig. 4, with a flange 14 at one end adapted to be housed inside the member 2. In assembling the member 2, an enlarged head 18 formed on the pin 17 is passed through the enlarged portion of a keyhole slot 15 in the flange 14 and the pin 17 then passed into the smaller portion of the slot 15 which is co-axial with the stem 12. The pin 17 'is then passed through a hole in the cap 11 and riveted to a disc 19 forming a portion of the outer end of the pin. Specification 6210/05 is referred to.
Patent GB-1030863-A (GB)
Title: Spark ignition systems
Inventor: GILBERT BRIAN
IPC: F02P3/04
Filed: 1961-06-13
Abstract: 1,030,863. Semi-conductor pulse generating circuits. JOSEPH LUCAS (INDUSTRIES) Ltd. June 1, 1962 [June 13, 1961], No. 21243/61. Heading H3T. A spark ignition system includes a gate controlled switch 19 for controlling current flow through a winding 15 and means operated by the engine for varying the gate current to cause the switch to turn on and off. Capacitor 20 (Fig. 1) is to protect the switch 19 from damage by surges of current when the selfcapacitance of the switch is not adequate. The positions of the interrupter 23 and resistor 22 may be reversed. In this case opening of the interrupter switches the switch 19 on. In Fig. 3, on closing the interrupter 23 a positive current flows to the gate to switch the switch 19 on. Upon opening the interrupter 23 the energy stored in the inductor 24 serves to switch-off the switch 19. Preferably a diode 32 is connected across the resistor 26 to prevent waste of the energy stored in the inductor 24. The interrupter could be replaced by a semiconductor switch controlled by magnetic or other means associated with the engine and the output of the circuit may be taken across inductor 15, the secondary being dispensed with. Alternatively a parallel connected output waveform could be used, Fig. 5 (not shown). Fig. 6 (not shown) is described in Specification 1,030,864.
Patent GB-351761-A (GB)
Title: Improvements in street lighting glassware
IPC: F21V5/00
Filed: 1930-07-14
Abstract: 351,761. Street lamp shades. HOLOPHANE, Ltd. and ENGLISH, S., Holophane House, Elverton Street, Vincent Square, London. July 14, 1930, No. 21297. [Class 75 (ii).] In street lighting glassware of the kind comprising a single piece refractor with an extended skirt, the base of the skirt is closed by a prismatic glass plate adapted to spread the light outwards. Fig. 1 shows a refractor having vertical internal prisms 1 and horizontal external prisms 2 and provided with a baseplate 3 with a series of parallel prismatic ribs 4 on the inner side designed to spread the light in the direction of the street but riot across the street. The prisms may be provided on either or both sides of the skirt or baseplate. In a modification, Fig. 4, the baseplate has two sets of parallel prismatic ribs 5 arranged at an angle. To spread the light in a symmetrical manner, circular or symmetrically curved prismatic ribs may be provided on the baseplate. A small hole 6 may be left in the base for ventilation purposes.